The work is being led by GBM Minerals Engineering Consultants with Wardell Armstrong International.
Plateau said it will use larger updated mineral resource estimate, which includes 51.9 Mlbs at 248 ppm U3O8 (indicated) and 72.1 Mlbs at 251 ppm U3O8 (inferred) utilizing 75 ppm U cut-off.
The new larger resource base, and the effect of employing higher cut-off grade resources is anticipated to enhance mine life, throughput and average grade.
Plateau Uranium CEO Ted O’Connor said: "We are excited to have started work on updating the PEA for the Macusani plateau projects with our now larger and more robust resource base.
"This next major milestone is expected to provide for improved project economics and will enhance Plateau Uranium’s position as a future source of low-cost uranium production in the mining-friendly jurisdiction of Peru."
After completion of the PEA, the company plans to start active delineation and exploration drilling later this year.
The company is developing a plan to restart drilling activities intended at in-fill drilling on and between known deposits.
Work will also include initial drilling on various untested, shallow, high-grade uranium showings on Plateau Uranium’s 1000 km2 land holdings.
